Pencil-sharpener.



G. K. H. KLOSE.

PENCIL SHARPENER.

I APPLICATION FILED MAY 5, 1913.

1,077,723. I Patented Nov. 4, 1913.

COLUMBIA PLANOGRAPH CO ,WASHINGTDN D c U N ITED STATES PATENT OFFTGE.

GUSTAV mess, on NEW YORK, N. Y., As'sIGno'n'To EAGLE PENCIL COMPANY, or NEW YORK, N. Y.

PENCIL-SHARPENER.

To all whom it may concern: 7 V

Beit known that LGUsTAv K. H. Know, a citizen of the United States, residing in the borough of the Bronx, in the county of New York and State of New York, have invented certain new and useful Improvements in Pencil-Sharpeners, of which the following is a specification.

My invention relates to pencil sharpeners designed to be held and operated by hand, and provided with a handle by which the sharpener can be held while the pencil is rotated in the conical sharpening socket of the device; and it is mainly characterized by the fact that the handle is detachably-secured to the body of the sharpener, to permitthe old sharpener to be removed and replaced by a new one whenever desired. This and other features of my invention can be best explained and understood by reference to the accompanying drawings, in which is represented the preferred embodiment of said invention.

In the drawingsFigure 1 is a perspective View of the pencil sharpener complete. Figs. 2 and Bare like views of the two per tions of which the sharpener iscomposed, detached and separate from one another- Fig. 2 representing the sharpener-proper and Fig. 3 the handle portion. Fig. 4 is a base or rear end elevation of the sharpener. Fig. 5 is front end view of the sharpener, showing in full lines the position of the parts when the sharpener body is locked to the handle, and in dotted lines the position of the same parts when the sharpener is unlocked from the handle. Fig. 6 is an elevation of the rear portion of the sharpener, partly broken away to expose the interlocking devices.

The sharpener-proper preferably is made of sheet metal in one piece, as shown in the drawings, with a conical longitudinally slotted body I), a knife bed bordering one edge of the slot and composed of two lips (Z, and a knife blade fitted and held between the lips, said lips and intermediate knife blade being tightly secured by brazing, soldering or other suitable means. A pencil sharpener of this general construction is shown in Patent No. 502,632 of August 1, 1893, and is not of my invention. Wherein my sharpener differs from the patent-ed construction is firstly, that while the length ofthe conical body is substantially Specification of Letters Patent.

Patented Nov. 4, 1913.

Application filed May 5, 1913. Serial No. 765,712.

the same in each, the internal diameter of the-,coueat the base in my sharpener is considerably greater than that of the sharpener of the patent, resulting in giving a sharper pitch to the cone, andperniitting the introduction of larger and thicker pencils into the sharpener; and secondly, that I dispense with the cylindrical neck on the prolongation of the conical body of the patented sharpenerto fit on and support the body of the pencil which is being sharpenedthus reducing materially the length of the sharpener and the metalused in its construction.

The handle portion also is preferably made-of sheet metal, and in two pieces or blanks, so fashioned and struck up or, shaped in dies that when. put together as shown in Fig. 2 they will form a conical socket e of the same contour-as the conical body ofthe sharpener and of such dimensions that when the sharpener'is inserted and pushed home in the socket, it will fit the same closely. The end portions of the two sheet metal pieces or blanks beyond the socket are brought together flatwise and are brazed, soldered or otherwise fastened in thisposition to form a fin-like handle f, similar to that illustrated -in Patent No. 838,508 of December 11, 1906. In the socket is a longitudinal tapering slot or opening 9 of a width to permit the knife bed of the sharpener to protrudeto the exterior of the socket and to occupy a position substantially tangential thereto, and also to properly expose the iongitudinal slot in thesharpener, as well as to permit the slight rotary movement of the fastener in the socket which in the style of fastener used in the present instance is nec ,essary in order to insure the engagement and disengagement of the devices by which the socket and the sharpener are detachably secured together. The fastener which I prefer to use for this purpose, and which is shown in the accompanying drawings, consists of a notch h in the base of the sharpener at the crotch where the knife bed 61 joins the body I; of the sharpener, and a tongue 2' on, and projecting from, one edge of the longitudinal opening 9 at the corresponding end of the socket e, 111 a position to engage said notch. The tongue 2' has a spring action and also an inward set, which causes it to bear with yielding pressure againstthe surface of the sharpener over which it may move when the latter is rotated in the socket; and it is preferred that this portion of the sharpener, amounting to but a very narrow annular ribbon at the extreme rear end of the body 6 should be cylindrical, as indicated at 7', and that a like narrow ribbon 70 should be formed at the extreme rear end of the socket e, on which the tongue 21 is located, in order to better assure the action of the fastening devicesalthough this construction is not in diipensable. Y

-n fitting together the two parts of the sharpener, the body Z2 is inserted into the socket c with the knife bed (Z protruding through the opening g, and is pushed home in the socket to bring the tongue 2' on the socket opposite to the notch h in the sharpener body 6. The latter is then rotated in the socket until the tongue 21 enters the notch h and overlaps the bottom edge of said notch, at which time the edge of the opening 9 on which the tongue is located, will be seated in the crotch at the junction of the knife bed cl with the body 6, thus preventing further rotary movement in that direction. Owing to the spring action and inward set of the tongue 2', the free end of the tongue will snap down over the bottom edge of the notch h with sufficient force to hold the parts against accidental rotary movement in a direction to separate them from one another. In this position the handle will be securely locked to the sharpener body, and any tendency of the parts to draw apart longitudinally will be checked by the bringing up of the shoulder at the inner end of the notch h against the tongue 2'. The pencil, in the operation of sharpening it, is rotated in the same direction as the sharpener is rotated in interlocking the tongue 2' with the notch it, thus removing all tendency, during this operation, of rotating the sharpener body I) in a direction to unlock it from the socket e.

To detach the handle from the sharpenerproper, all that is needed is to rotate the sharpener body 6 in a direction, and far enough, to disengage it from the tongue '5, and then withdraw it from the socket.

Having described my invention and the best way now known to me of carrying the same into practical efiect, I state in conclusion that I do not restrict myself to the structural details hereinbefore set forth in illustration of my invention, since manifestly the same can be varied considerably without departure from the spirit of the invention: But

hat I claim herein as new and desire to secure by Letters Patent, is as follows:

1. A pencil sharpener comprising a coni-.

cal longitudinally slotted sharpener body having a knife bed and knife bordering one edge of the slot, a handle portion consisting of a conical socket and handle laterally proj ecting therefrom, said socket formed to receive and fit closely around the sharpener body and having a longitudinal slot through which the knife bed of the sharpener protrudes, and means for detachably fastening the socket to the sharpener body, substantially as hereinbefore set forth.

2. A pencil sharpener comprising a coni cal longitudinally slotted sharpener body 6 having a knife bed and knife bordering one edge of said slot and a notch h in its base at the point where the knife bed joins the body 6, and a handle portion consisting of a conical socket e and a handle f, said socket formed to receive and fit closely around the conical sharpener body, and having a longitudinal slot or opening 9 through which the knife bed of the sharpener protrudes, and a tongue 2' on one edge of said opening, adapted to be engaged with and disengaged from the notch h by a movement of partial rotation of the sharpener body in the socket, substantially as hereinbefore set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GUSTAV K. H. KLOSE.

\Vitnesses:

SAMUEL KRAUS, EDWARD M. BEROGHENNY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

